G_1-extension for the simple module of simple algebraic group of type G_2

Let G be the simply connected semisimple algebraic group over algebraically closed field K in characteristic p,and G 1 be the kernel of the first Frobenius morphism of G,i.e G 1=KerF.All G 1 Extensions for the simple module of simple algebraic group type G 2 over algebraic closed field K in characteric five are determined in this note.